<template>
  <div id="app">
    <a-input placeholder="请输入任务" class="my_ipt" 
    :value="inputValue" @change="handleInputChange"/>
    <a-button type="primary" @click="addItemToList">添加事项</a-button>

    <a-list bordered :dataSource="infolist" class="dt_list">
      <a-list-item slot="renderItem" slot-scope="item">
        <!-- 复选框 -->
        <a-checkbox :checked="item.done" @change="(e)=>{cbStatusChanged(e,item.id)}">{{ item.info }}</a-checkbox>
        <!-- 删除链接 -->
        <a slot="actions" @click="removeItemByID(item.id)">删除</a>
      </a-list-item>

      <!-- footer区域 -->
      <div class="footer" slot="footer">
        <span>{{unDoneLength}}条剩余</span>
        <a-button-group>
          <a-button :type="viewKey === 'all'? 'primary':'default'" @click="changeList('all')">全部</a-button>
          <a-button :type="viewKey === 'undone'? 'primary':'default'" @click="changeList('undone')">未完成</a-button>
          <a-button :type="viewKey === 'done'? 'primary':'default'" @click="changeList('done')">已完成</a-button>
        </a-button-group>
        <a @click="clean">清除已完成</a>
      </div>
    </a-list>
  </div>
</template>


<script>
import { mapState,mapGetters } from 'vuex'

export default {
  name: 'app',
  data() {
    return {}
  },
  created() {
    this.$store.dispatch('getList')
  },
  computed: {
    ...mapState(['inputValue','viewKey']),
    ...mapGetters(['unDoneLength','infolist'])
  },
  methods: {
    // 监听文本框内容变化
    handleInputChange(e) {
        // console.log(e.target.value)
        this.$store.commit('setInputValue',e.target.value)

    },
    // 向列表中新增 item 项
    addItemToList() {
      if(this.inputValue.trim().length <= 0) {
        return this.$message.warning('文本框内容不能为空')
      }
      this.$store.commit('addItem')
    },
    // 根据id删除 Item
    removeItemByID(id) {
      // console.log(id)
      this.$store.commit('removeItem',id)
    },
    // 监听复选框选中状态变化的事件
    cbStatusChanged(e,id) {
      // console.log(e.target.checked)
      // console.log(id)
      const param = {
        id:id,
        status:e.target.checked
      }
      this.$store.commit('cbStatus',param)
    },
    // 清除已完成的任务
    clean() {
      this.$store.commit('cleanDone')
    },
    // 修改页面上展示的列表数据
    changeList(key) {
      // console.log(key)
      this.$store.commit('changeViewkey',key)

    }
  }
}
</script>

<style scoped>
#app {
  padding: 10px;
}
.my_ipt {
  width: 500px;
  margin-right: 10px;
}
.dt_list {
  width: 500px;
  margin-top: 10px;
}
.footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
</style>

